mesothorax


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Related to mesothorax: mesothoracic

mesothorax

[¦me·zō′thȯ‚raks]
(invertebrate zoology)
The middle of three somites composing the thorax in insects.
References in periodicals archive ?
Medial area of thorax with a pair of setae on each mesothorax and metathorax segment.
Head, pro- and mesothorax with dorsal pattern of dark shades of brown, olive or grey, densely spotted in lighter color such as pale yellow or bright brown; dorsomedian longitudinal line in the same lighter color.
of the described species are: larval prothoracic spatula absent, collar segment with two very large papillae without setae in dorsal region; dorsal sclerotized plate occupying pro and mesothorax, lacking central papillae in mesothorax; pleural papillae very well developed in prothorax; terminal segment with four pairs of setose papillae (one setae long, one median and two short) not placed in lobes.
Thorax brown, being darkest on top, and front spiracles and mesothorax as in Ph.
After 24 h, and using and Eppendorf [R] 0-10 [micro]L pipette, 6.5 [micro]L of the solution, containing ah aliquot of each one of the treatments, was applied directly on the larval mesothorax of S.
Pronotum long, slightly swollen above upper end of epomia, epomia itself long and very strong, mesoscutum centrally rather finely and sparsely punctate with hairs, laterally weakly punctulate with setae; notauli present but weak and shallow; mesopleuron with sparse fine setiferous punctures; epicnemial carina rather straight, not reaching anterior margin of mesopleuron and exceeding level of lower corner of pronotum; sternal part of mesothorax 1.2x as long as mid coxa.
The mesothorax of Diptera species has become enlarged to contain the enormous flight muscles as a result of their reliance on the forewings for flight.
The dorsal longitudinal flight muscles (DLMs) are situated immediately ventral to the dorsal portion of the mesothorax (Pfau and Koch 1994).
moesta (71.1%) [ILLUSTRATION FOR FIGURE 1a OMITTED], but larvae also were attached to the wing pads (18.4%) [ILLUSTRATION FOR FIGURE 1b OMITTED], gill lamellae (7.9%) [ILLUSTRATION FOR FIGURE 1c OMITTED], and mesothorax (2.6%).
The homology of several elements remains uncertain: the identity of lateral elements in series S on the head; the element near the pseudopore on the mesothorax; whether the loss of element p5 on Abd.